Apparatus for beveling the heel portions of shoe insoles



w. R RDQN 2,283,550 APPARATUS FOR BEVELING THE HEEL I ORTIO N S OF SHOE INSOLES May 19, 1942.

2 Sheets-Sheet 1 Filed 001:. 27,; 1959 y 19, w. R. oRboN 2,283,550

APPARATUS FOR BEVELING,TKE HEEL PORTIONS SHOE INSOLES Filed Oct. 27', 1939 2 sheets-sheet 2 3b I f. Q .16 I 12X- 5 K 13 16 I, 7

% v Williamjifi'arghrg Patented May 19, 1942 UNiTED STATES PATENT or ies APFARATUS FOR BEVELING THE HEEL PORTIONS OF SHOE INSOLES William R. Gordon, Columbus, Ohio, assignor to The Walker T. Dickerson Company, Columbus, Ohio, a corporation of Ohio Application October 2'7, 1939, Serial No. 801,656

6 Claims. (01. 1217) This invention relates to apparatus for building shoes and is particularly directed to a machine for beveling the heel portions of shoe insoles. Prior to the introduction of this machine, the under surfaces of the heel portions of shoe insoles were not beveled but the heel portion of the insole was allowed to remain the full thickness of the insole. During the formation of a shoe with such an insole, at the time the upper was lasted over the heel portion of the insole, the sharp lower edges of the heel portion caused the formation of a groove around the insole between the upper edge and the shoe upper. This groove made the shoes uncomfortable and caused malformation of the wearers feet.

To correct this undesirable feature, it is proposed to bevel the under surfaces of the insoles at the heel portions to cause the upper to more closely conform to the insole and position the upper rear edge of the insole in closer relationship to the shoe upper.

The primar object of this invention resides in the formation of a machine to produce the bevel on the under surfaces of shoe insoles at 1 the heel portion. This machine must be provided with a cutting element which will produce the bevel on insoles of various sizes.

Another object resides in forming the cutter of the machine with blade portions, each possessing' a, curved formation in order that the bevel produced on the shoe insoles will extend. from the center of the heel portion to each side thereof.

It is also an object to so form the cutter that it may be employed to produce the beveled edges on all sizes of insoles without requiring the adjustment of the machine to which the cutter is applied.

Another object resides in providing the machine with a work supporting element and positioning this element with relation to the cut- 'ter of the machine so that an insole supported by the element will be engaged by the cutter as it moves away from the insole to the end that the beveled cut will be produced thereon without marring or defacing the insole.

A still further object is to provide the work supporting element with gage means adjacent the cutter, said means limiting the movement of the insole toward the cutter and regulating the size of the bevel produced on the insole.

It is also an object to provide means for mounting the work supporting element so that it may be adjusted to compensate for variations in size of the cutter caused by sharpening.

Other objects will be apparent from the following description and the accompanying drawings in which the invention'has been illustrated in its preferred form.

In the drawings: Fig. 1 is a perspective View of a machine forme in accordance with the present invention, aninsole .being shown in operative position on the work supporting element in dotted lines.

Fig. 2 is a vertical transverse sectional view taken through the machine shown in Fig. 1;

Fig. 3 is a horizontal sectional view taken on the plane indicated by the line III-III of Fig. 2;

Fig. 4 is a detail sectional View taken through the work supporting element and showing the gage means secured thereto;

Fig. 5 is a plan View of the heel portions of a pair of insoles of different sizes after being oper ated by the machine;

Fig. 6 is a vertical sectional view taken through the heel portion of a shoe in which'an insole beveled on the machine has been incorporated.

Referring more particularly to the drawings,

the numeral 1 designates generally the machine comprising the present invention. This machine is preferably supported on a table or other suitable frame 2 in ,a horizontal position. The. frame 2 is provided with an upstanding post 3 in the upper end of which is journaled a horizontally disposed shaft 41. One endof this shaft is provided with a plurality of belt wheels 5, one of which is keyed to the shaft d and receives a belt 6 extending from a power driven pulley, not shown. The other belt wheel 5 is loosely positioned on the shaft 4 so that when the belt 6 is transferred thereto, rotation of the shaft will be discontinued, although the belt continues to be driven by the driving pulley.

At the opposite end of the shaft, there is provided a cuttingelement l which is fixed to said shaft and driven positively thereby. The cutter includes a, body portion 8 through which the shaft 4 extends, this end of the shaft being, in this instance, illustrated as square to prevent relative movement between the shaft and the cutter. The latter element is formed to include a plurality of circumferentially spaced blades 9, the end portions of which extend to a greater distance from the body 8 than the center portions. The blades decrease in length from the end portions to the central portion, the rate of decrease being such that the blades will each possess a curved cutting edge after they have been sharpened as shown at ID.

The support 2 below the cutter adjustably receives a block-like element l l which is maintained in its positions of adjustment by one or more screws l2 extending through a slot I3 formed in the block II and into the stand 3. At the end of the block remotely disposed from the stand, a stud I4 is provided on which is pivotally supported a work receiving element I5. This member extends upwardl from the pivot l4 and is provided at its upper end with a shelf member 16 on which the insoles are disposed during the bevel forming operation. At the forward end of the member l6, its width is reduced as at IT, the forward end of this reduced portion being rounded to permit it to be disposed in close relation to the cutter without actually engaging it.

The forward end of the member I6 at the rounded portion has a pair of upwardly extending lips I 8 secured thereto in spaced relation. These members serve to engage the insoles and prevent them from moving into the cutter when the insoles are applied to the supporting element. Due to the curved formation of the forward end of the supporting shelf I6 and the spacing of the lips l8, these members serve to centralize the insoles as they are moved into position to be operated upon by the cutter.

To prevent the elevation of the insole and its escape from the lips l8 which constitute a gage, there is provided a resilient T-shaped guard [9. This member has downwardly projecting end portions 29 through which screws pass to secure it to the shelf IS. The length of the ends 20 are such that the major portion of the guard will be disposed over the reduced end of the shelf and spaced a slight degree therefrom. The body portion of the T-shaped element extends forwardly and overlies the reduced end of the shelf adjacent the cutter. The end of the guard adjacent the cutter is curved downwardly so that a resilient pressure will be applied to the insoles and they will be firmly held in engagement with the shelf.

As shown in Figs. 1 and 2, the block element II and stud M are so positioned that the shelf of the work supporting element will be disposed slightly below the horizontal plane in which the axis of rotation of the cuttingelement is disposed. The upper surface of the shelf I6 is.

substantially tangent to the smallest diameter of the cutter when the shelf 16 is in position to permit the cutter to form the bevel on the insoles. While the work support is normally maintained in a stationary position, it may be moved about the axis of the stud l4 while an insole is positioned on the shelf IE to move the insole into engagement with the cutter. Preferably, the insoles are placed upon the shelf it while it is in the position shown in Fig. 2=and moved under the guard member into engagement with the cutter.

To maintain the work holder in proper position, the block II has a strap 2| secured thereto, the outer end of this element being bent and extending to a position in front of the work holder as at 22. in the strap for the reception of a stop screw 23 which engages the work holder and limits its pivotal movement. The screw 23 is adjustable to vary the operative position of the work holder.

A threaded opening is provided To prevent injury to the operator, a guard 24 surrounds the cutter and is secured as at 25 to the stand 3. The guard is provided on the side adjacent. the work holder with an opening 26 through which the operator may observe the working of the cutter and the degree of insertion of the insoles.

If the work holder is to be oscillated during the operation of the machine, the lower portion of the guard 24 must be cut away to permit swinging movement of the guard. By forming the cutter of a sufiicient length and providing the blades with the proper curvature, the cutter may be employed to bevel the heel portions of insoles ranging in size from the largest to the smallest. As illustrated in Fig. 5, the bevel cuts produced on the insoles will be of substantially the same dimensions except that the length of the bevel on the wider insole 21 will be greater than that of the narrow insole 28.

When the blades of the cutter become dull and are reground, the diameter of the cutter will be reduced and it will be necessary to loosen the screw l2 and move the block I I together with the work support I 5 toward the cutter. After these elements have been properly adjusted, the screw is again tightened to maintain them in proper position. At this time, it may also be necessary to adjust the stop screw 23 to secure thedesired width of bevel on the insoles. Due to the provision of the cutter with the arcuate cutting edges and the work supporting element in substantially tangent relationship to the cutter, it will be seen that the insoles may be beveled while they are held substantially stationary. This method of beveling the insoles produces uniform products and eliminates objections to other mechanism previously provided for performing this operation.

While the machine has been illustrated and described in but a single form, it is obvious that.

many minor changes may be made in the construction and relation of parts without departing from the spirit and scope of the invention as set forth in the following claims.

What is claimed is:

1. A machine for beveling the heel portions of shoe insoles comprising a frame, a shaft journaled for rotary movement on said frame, a cutter carried by said shaft, said cutter having longitudinally extending blades, the diameter of said cutter decreasing from the ends toward the :central portion thereof to cause said bladesto possess arcuate cutting edges, a work supporting member pivotally mounted on said frame at one side of and below said cutter, and stop means for limiting the pivotal movement of said supporting member with the work receiving surface thereof substantially tangent to the smallest diameter of said cutter.

2. A machine for beveling the heel portions of shoe insoles comprising a frame, a shaft journaled for rotary movement on said frame, a cutter carried by said shaft, said cutter having longitudinally extending blades, the diameter of said cutter decreasing from the ends toward the central portion thereof to cause said blades 'to possess arcuate cutting edges, a work supporting element disposed at one side of said cutter, the work receiving surface of said element being substantially parallel to. the axis of rotation of said cutter and tangent to the cutter at the smallest-diameter thereof, and gage means car- ,ried by said work supporting element adjacent the cutter.

3. A machine for beveling the heel portions of shoe insoles comprising a frame, a shaft journaled for rotary movement on said frame, a cutter carried by said shaft, said cutter having longitudinally extending blades, the diameter of said cutter decreasing from the ends toward the central portion thereof to cause said blades to possess arcuate cutting edges, a work supporting element disposed at one side of said cutter, the work receiving surface of said element being substantially parallel to the axis of rotation of said cutter and tangent to the cutter at the smallest diameter thereof, gage means carried by said work supporting element adjacent the cutter, and resilient means formed with said supporting element to hold the work in engagement with said gage means.

4. In an insole beveling machine, a frame, a shaft journaled on said frame, a cutter secured to said shaft for rotation therewith, said cutter having an intermediately disposed reduced waist portion and enlarged ends, an insole support mounted for pivotal movement about an axis spaced from said cutter and parallel to the longitudinal axis of said shaft, said support having a flat work-engaging surface with a heel-portion receiving end provided with an arcuate edge, the major distance between said edge and the pivotal axis of said holder being substantially equal to the distance between said axis and said cutter, said distance being substantially greater than the perpendicular distance between said axis and said work-engaging surface.

5. In an insole beveling machine, a frame, a shaft journaled on said frame, a cutter secured to said shaft for rotation therewith, said cutter having an intermediately disposed reduced waist portion and enlarged ends, an insole support mounted for pivotal movement about an axis spaced from said cutter and parallel to the longitudinal axis of said shaft, said support having a flat work-engaging surface with a heel-portion receiving end provided with an arcuate edge, the major distance between said edge and the pivotal axis of said holder being substantially equal to the distance between said axis and said cutter, said distance being substantially greater than the perpendicular distance between said axis and said work-engaging surface, and means on said support for holding an insole flatly thereon with the longitudinal axis of the insole at right angles to the axis of rotation of said cutter and in registration with the smallest diameter thereof.

6. In an insole beveling machine, a frame, a shaft journaled on said frame, a cutter secured to said shaft for rotation therewith, said cutter having an intermediately disposed reduced waist portion and enlarged ends, an insole support mounted for pivotal movement about an axis spaced from said cutter, and parallel to the longitudinal axis of said shaft, said support having a flat work-engaging surface with a heel-portion receiving end provided with an arcuate edge, the major distance between said edge and the pivotal axis of said holder being substantially equal to the distance between said axis and said cutter, said distance being substantially greater than the perpendicular distance between said axis and said work-engaging surface, and means onsaid support for locating an insole thereon with the edge of the heel portion of the insole in registration with the arcuate edge of said support.

WILLIAM R. GORDON. 

